“Congress absolutely can, and should, explore new rules to tighten our securities law and shut down any sort of insider trading, including by members of Congress,” said Rep. John Sarbanes, D-Md., in a statement to the Washington Examiner.... Sarbanes pointed to a resolution he introduced earlier this year that touted several reforms to campaign finance that include overturning Citizens United, the Supreme Court decision that led to the creation of super PACs.